Improved hinge-machine



(time 'EDWARD BROWN. or New YORK, N. Y.

Letters Patent No. 84,256, dated November 24, 1868.

IMPROVED HINGE-MACHINE.

The Schedule referred tu in these Letters Patent and making part of the same.

To all whom it may conce/rn Be it known that I, EDWARD BROWN, of the city, county, and State of New York, have invented a ce1'- tain new and improved Machine for Finishing Hinges; and I do hereby declare that the following is a full, clear, and exact description thereof', reference being had to the accompanying drawings, and to the letters of reference marked thereon. v

The object of my invention is to improve the form and finish of hinges, by pressing them between dies, whereby the pipe ofthe hinge is rendered perfectly cylindrical, or nearly so, and the leaves are flattened and bent, so as to lie in the proper plane rela-tive to the avis of the hinge, andthe hinge is thus made much more neat in appearance, symmetrical in shape, and

durable, than before being operated upon'by my inven-l In order to carry ont this object, my invention consists in the combination, with 'the dies and the frame and the working-parts of a press, in the manner hereinafter described, of levers and springs, by which a hinge-finishing machine is produced which is effective, cheap, and little liable tO-get out o'f order.

The machine hereinafter described, in which my invention is embodied orembraced, consists of a bed, from which rise two upright guide and supportingposts, in which are bearings for the drivingshaft, and between which slides a gate to which the upper die of the machine is afxed, the lower die being supported on yielding levers. This lower die is in two pieces, one being fixed and the other movable, the whole being so arranged that the pipe is pressed into a proper cylin. drioal shape by the advance or approach of the dies, both laterally and vertically, the lower dies being supported or pressed up to their work by springs and levers, which yield when a larger hinge ,than usual is between the dies, thus allowing the machine to accommodate itself in some degree to the form and size of the hinge, and preventing the breaking of the parts.

In the accompanying drawings- Figurel is a front elevation of my machine.

Figure 2 is a section of the lower part of it, on a vertical plane, passing lengthwise through the cent-re of the machine.

Figure 3 4is a plan of my machine. y

Figure 4 is a view in detail ofthe dies, being a vertical section on an enlarged scale, passing through the axis of one ofthe springs.

Figure 5 shows a hinge before being operated upon by my machine. 4

Figure 6 shows a hinge after being operated upon by my machine.

A is the bed of the press, B and G are the uprights, D, the main shaft, and F, the gate. To the gate, which has a reciprocating vertical motion imparted to it by the crank G, on the main shaft D, is secured the upper die, H, in the usual manner, and working up and down with it. The lower die, the form of which Ais clearly seen in fig. 4, is in two pieces, which are held apartby sion or face of the die for giving form to the pipe of the hinge, is formed. It is nearly of the form of a quarter of a hollow cylinder. 4 The upper half of the said pipe is pressed and finished by the upper die, H, a depression or groove, e, being formed in it for that purpose, and the leaves are pressed flat, and bent to the proper angle, radially to the axis of the hinge, by the fiat surfaces of all three of the dies. The die K is operated by a rod, L, which receives motion from the cam M, on the main sha-it I), through the lever N. The

cani M rests against a spring, O, which is coiled on the main shaftLD, and is held against the cam by the collar P. A sleeve, Q, and collar, R, prevent the cam from being forced too far in the opposite direction. The cam M and sleeve Q, have each a projecting teat or rib, which slides in the groove f in the main shaft, and

thus allows them to move along, but not to turn, except with the shaft. When a hinge having a larger pipe than usual, or than' the dies will wholly receive, is introduced into the machine, the spring O yields, and

thus permits the motion of the die K to accommov date itself' to the diameter of the said pipe, while, at the saine time, the pressure is continued suihciently to perfect 'the pressing and finishing ofthe pipe. The dies K and I rest in a recess or seat made to receive them, in the plate or yielding bed S, which is supported on four levers, T, T1, T2, and T3; These levers have their fulcra, y, h, i, andj, in a raised portion, U, of the bed A, and their inner and shorter arms are held up to and support the bed at the proper height, by the springs V, V, V2, and V3. These springs are coiled around screws 7:., Z, mf, and n., which are hung in bearings, so they will vibrate freely in the direction of length of the levers. The springs are held down to the levers, and the amount of pressure necessary to make the bed S yield, is' made greater or less by operating nuts on the said screws. \Vhen a hinge having greater thickness of leaves or diameter of pipe is introduced into the machine, these levers and springs allow the bed S to sink suflciently far to admit the greater bulk of such hinge, yet the pressure is continued sufficiently to insure the pressing and finishing of the7 hinge as far as may be.

In fig. 5 is shown a hinge'in which theleaves and pipe have not been acted on by my machine. It will be seen that the sections of the `pipe do not form one continuous cylinder, nor set snugly up against the pivot; neither are the leaves in the proper position relative to the plane passing through the radius of the hinge. In iig. 6 is shown thesame hinge, after being pressed and finished by my machine.

If it is desired to increase Vthe pressure of the spring O, it may be done .by setting the collar P farther out, or nearer the cani M. v

Power to drive the machine is applied to the drivingshaft by means ot' the pulley '11,', which may he made loose on the shaft, anda suitable clutch for connecting and disconnecting the power may be interposed. In using this machine, the hinges are laid, one at atime, on the dies K and I, the pipe ofthe hinge. droppin g iu between the said dios, and the leaves lying on their tlat upper surfaces. The gate now descends, and at the same time the die K is moved up hv the cam M, and they at once force the sections of the pipe snugly into place, and give the proper form to itand the leaves,

as sen in fig. (5. By means ot' the levers T, Tl, T2, and T, with their Correspending;` springs, applied to the support of the dies K and I, and the spring 0, lever N, and rod L, applied to the die K, the breaking' or injuriouslvT strainshaft D, and gate F, with their connections, Constit-utin,r t-he frame and univing-parts of a press, of the die H, the yielding dies K I, the levers T, T1, T2, T3, and N, and their corresponding springs, substantially as and for the purpos(A ser forth.

EDWARD BROlVN. lVitnesses:

A. M. C. SMITH, Jr., H. .latins W as'roN. 

